He shrugs it off and puts it down to "nothing but good luck".

Last Friday, Maraylya's Brett De Stoop officially broke the 1000cc APSF class motorcycle Dry Lakes Races Australian (DLRA) record and unofficially broke the world record after he ran an amazing 373.46 kilometres per hour at Lake Gairdner, South Australia.

With a run like that, it's easy to see how Mr De Stoop smashed the Australian record in his class, which was previously 338.16 kilometres per hour and was almost 30 kilometres faster than the world record which stood at 346.88 kilometres per hour.

But, even with such an impressive record under his belt, the Maraylyan insists it comes down to good luck.

"I'm not one of those 'bike heads' that lives to ride. It was purely good luck that I got such a good run on the last one," Mr De Stoop said.

And if the speed isn't impressive enough, Mr De Stoop also built his motorcycle in his back garage.

The 1973 Suzuki GT 750 has "come from nothing to everything" after years of hard work.

"To tell you the truth I'm petrified of the thing [the bike] ? I'm more interested in the building side of things," Mr De Stoop said.

"I think that shows, considering a bike I built myself, was able to go out there and do what it did and without any trouble. I am more worried about testing my bike and seeing if what I have done to it works, that's why I race.

"The fact that it was so fast and managed to break the record was just a bonus, no biggie really."

Mr De Stoop said he doesn't plan on trying to break the world record officially over in Bonneville, Utah, because he'd rather "stay here, keep building and go from there".

"I don't do this to break records, it's about doing something I love and having fun."

And speaking of fun, Mr De Stoop is known by the "boys in the scene" as an "outfit man".